package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.jwt.JwtUtil;
import com.atguigu.lease.common.redis.RedisTemplateConfig;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.Objects;
import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    @Autowired
    private SystemUserService systemUserService;
    @Override
    public CaptchaVo getCaptcha() {
        //生成验证码图片base64字符串以及正确验证码
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        String toBase64 = specCaptcha.toBase64();
        String code = specCaptcha.text();
        //将验证码存储到redis,设置时间
        String key = UUID.randomUUID().toString().replaceAll("-", "");
        redisTemplate.opsForValue().set(key,code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        //封装
        CaptchaVo captchaVo = new CaptchaVo(toBase64, key);
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        //根据key获取redis的正确验证码
        String code =(String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(code)){
            //验证码过期
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //输入和正确的验证码是否一致
        if (!code.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //根据账号进行数据查询
        LambdaQueryWrapper<SystemUser> systemUserLambdaQueryWrapper = new LambdaQueryWrapper<>();
        systemUserLambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(systemUserLambdaQueryWrapper);
        if (systemUser==null){
            //账号错误
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        //密码
        if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        //账号禁用
        if (systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        //jwt生成token
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
        return token;
    }
}
